Preparation of polytetramethylene adipamide

Details Preparation of polytetramethylene adipamide Preparation of polytetramethylene adipamide

1981-03-25

1983-10-04

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528336, C08G 6928

Patent

active

044080360

ABSTRACT:
A process for the preparation of white nylon 4,6 polyamide of high molecular weight from a tetramethylenediamine adipic acid prepolymer, formed under controlled conditions of temperature and water vapor pressure and wherein the plurality of cyclical end-groups in the prepolymer does not exceed 0.20 mg. equivalent per gram of prepolymer.

REFERENCES:
patent: 2163636 (1939-06-01), Spanagel
Journ. of Polymer Science, vol. 15, pp. 537-545 (1977).

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